OpenJDK is an open-source software package that allows collaboration on the Java Platform, Standard Edition and related projects. It provides free, production-ready JDK 20 binaries for Linux, macOS, and Windows. The package includes active projects such as Amber, Loom, Panama, and Valhalla, which enhance Java's features. Developers can contribute to the OpenJDK community by browsing and cloning the code repository and making patches to fix bugs or add new features. OpenJDK is maintained by Oracle Corporation and its affiliates.

openjdk.org

don't have tea/gui yet? download here

Copy the tea one-liner above into your terminal to install openjdk.org. tea will interpret the documentation and take care of any dependencies.